Wednesday

April 23, 2014

April 23, 2014

Posted by **Alonzo** on Thursday, March 11, 2010 at 1:47pm.

- Precalculus -
**FredR**, Thursday, March 11, 2010 at 8:09pmdistance = velocity x time or

time = distance / velocity

total time=d1/v1+d2/v2=2.5 hrs (1)

where d1 = car distance = 30 (2)

v1 = car speed

d2 = train distance = 120 - d1 (3)

v2 = train velocity = v1+20 (4)

combine (1), (2), (3), and (4) and solve for v1

- elementary -
**Anonymous**, Thursday, March 10, 2011 at 7:34pm300 and 200000

- Precalculus -
**laura**, Saturday, December 3, 2011 at 3:57pmidk can you show me how please

**Related Questions**

MATH - Andrea made a car trip of 440 Kilometers. She averaged 54 Kilometers per ...

math - Andrea made a car trip of 440 Kilometers. She averaged 54 Kilometers per ...

math - Phil is making a 40-kilometer canoe trip. If he travels at 30 kilometers ...

math - Phil is making a 40-kilometer canoe trip. If he travels at 30 kilometers ...

math - Phil is making a 40-kilometer canoe trip. If he travels at 30 kilometers ...

math - Phil is making a 40-kilometer canoe trip. If he travels at 30 kilometers ...

Algebra - Is there an easier way to do this? "A freight train leaves a station ...

math - Wendy took a trip from city A to city B, a distance of 560 mi. She ...

physics - On a 120 km track, a train travels the first 30 km at a uniform speed ...

physics - A train takes 3.3 hours to travel the first leg of a trip at 17 m/s. ...